package com.orangelife.utils;

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Hashtable;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;

public class MatrixToImageWriter {
	private static final int BLACK = 0xFF000000;
	private static final int WHITE = 0xFFFFFFFF;

	private MatrixToImageWriter() {
	}

	public static BufferedImage toBufferedImage(BitMatrix matrix) {
		int width = matrix.getWidth();
		int height = matrix.getHeight();
		BufferedImage image = new BufferedImage(width, height,
				BufferedImage.TYPE_INT_RGB);
		for (int x = 0; x < width; x++) {
			for (int y = 0; y < height; y++) {
				image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
			}
		}
		return image;
	}

	public static void writeToFile(BitMatrix matrix, String format, File file)
			throws IOException {
		BufferedImage image = toBufferedImage(matrix);
		if (!ImageIO.write(image, format, file)) {
			throw new IOException("Could not write an image of format "
					+ format + " to " + file);
		}
	}

	public static void writeToStream(BitMatrix matrix, String format,
			OutputStream stream) throws IOException {
		BufferedImage image = toBufferedImage(matrix);
		if (!ImageIO.write(image, format, stream)) {
			throw new IOException("Could not write an image of format "
					+ format);
		}
	}
	public static ByteArrayOutputStream  getMatrix(int width,int height,String value){
		// 二维码的图片格式
		String format = "png";
		Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
		// 内容所使用编码
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		hints.put(EncodeHintType.MARGIN, 1);
//		hints.put(EncodeHintType.MARGIN,"1"); 
//		hints.p
		
		// 生成二维码
		ByteArrayOutputStream bao = new ByteArrayOutputStream(); 
		BitMatrix bitMatrix = null;
		
		MultiFormatWriter mm=		new MultiFormatWriter();
	
		try {
			bitMatrix = new MultiFormatWriter().encode(value,
					BarcodeFormat.QR_CODE, width, height, hints);
		
			MatrixToImageWriter.writeToStream(bitMatrix, format, bao);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		
		return bao;
		
	}
	public static String getBase64BitMatrix(int width,int height,String value){
		// 二维码的图片格式
		String format = "png";
		Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
		// 内容所使用编码
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		hints.put(EncodeHintType.MARGIN, 1);
		// 生成二维码
		ByteArrayOutputStream bao = new ByteArrayOutputStream(); 
		BitMatrix bitMatrix = null;
		try {
			bitMatrix = new MultiFormatWriter().encode(value,
					BarcodeFormat.QR_CODE, width, height, hints);
			MatrixToImageWriter.writeToStream(bitMatrix, format, bao);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		String ok = base64Util.Base64Code(bao.toByteArray());
		return ok;
		
	}
}
